That trike of yours is good-lookin! I've got a buddy with one, and really admire its looks. I live a couple blocks from our Harley dealer, and our street is a constant traffic flow of big rumblers...
There's a bunch of info on stock refinishing on
http://www.theboxotruth.com/ and
http://www.surplusrifle.com/index.asp. I've got another friend who took a "muddy" oiled Mauser, Easy-Off'ed the stock twice, then soaked it in a parts-cleaning trough for two days in a Clorox bath before drying it off by slathering it with rubbing alcohol. Then, and only then, did he steel-wool it. He polyurethaned the stock once it was clean (not that I'm that hot on plastic-coated Mausers), and it looks like a piece of "Danish Modern" oak furniture. That thing's blonder than this Swedish gal in my junior high school class...